Frame for grindstones.



G. H. RICHARDS.

FRAME FOR GRINDSTONBS. APPLICATION HLED 00`T.6.1913.

1 1 1 4,806. Patented 0013.27, 1914.

2 BHEETS'-S1IEET 1.

THE NORRIS PEYERS C0.. PHOTOLITHO.. WSHINGYUN. D. C.

G. H. RICHARDS.

. FRAME FOR GRINDSTONBS.

APPLIoATloN FILED ooT.e, 1913 1,1 14,806. Patented Oct. 27, 1914.

2 SHEETS-SHEET 2.

INE MORRIS PETERS C0.. PHOTO-MTNA., WASHING IDN. D. C.

niarrnnl srafrnsi PATENT Nernten.;l

GEORGE HAROLD "RICIIARDS,` 0F AURORA, ILLINOIS, ASSIGNOR TO URORA DO0R` i HANGER. AND SPECIALTY COMPANY, OF AURORA, ILLINOIS, .A CORPORATION OF ILLINOIS;

To all whom it may concern.' l

Be 1t known that I, GEORGE I'I. RICHARDS, a citizen of the United States, and a resident `of Aurora, in the` county of Kane and State of Illinois, have invented certain new and useful Improvements in Frames for Grindstones, of which the following is a full, clear, and exact specification.

My invention is concerned with frames for grindstones, and is designed to produce a frame of the class described that shall b e capable of being collapsed for shipment.

To illustrate my invention, I annex hereto two sheets of drawings, in which the same reference characters 'are used to designate identical parts in all the figures, `of which,-

Figur-er1 is a perspectiveview of the complete frame inits erected position and with the grindstone indicated in dottedlines; Fig.

2 is an inverted plan view of the same as it appears when collapsed ready to be crated for shipment; Fig. 3 is a detail view on an enlarged scale, showing one of the joints and the bracket for the shaft-bearing; and F ig. l is a view in section on the line A-A of Fig. 3.

In carrying out my invention, I` provide two similar side-frames, which are composed of the central portion 10, preferably tubular, havingsimilar legs 11 and 12 pivoted to the `ends thereof, as by nuts and bolts 13 passing through the flattened circular ends 14 of the said central portion and legs. The two side frames thus formed are braced toward their lower ends by the pair of crossed brace-pieces 15, which arepermanentl bolt-` ed or riveted to eachother and to the egs 11 and 12. "When the frame is knocked down or collapsed, as seen in Fig. 2, these braces 15 are still in place holding the parts in their relative positions. The frames are also properly spaced apart at their upper ends by the U-shaped iron bar 1G, which is connected to the frames by the adjacent bolts 13 which pass through 'the adjacent sides of said Uf shaped frame, as well as through the central portionand legs which they connect. This U-shaped frame 16 has secured thereon the splash-board 17, which is thus suitably located to protect the operator sitting on the seat 18 from being splashed by the water which :may be applied to the bottom of the stone, departing therefrom by its inertia. The seat 18 is rigidly `secured on the Uf shaped frame 19, which for the purposes of Speeifcationof Letters Patent.

Application led October 6, 1913.

v FRAME FOR G-RINDSTONES.

serial No. 793,555.

itures 21, which are necessary for the vertii leal adjustment, as the lower end of the U- shaped frame 2O is secured by bolts passing i through certain of said apertures 21 and throughfan aperture `in, the brace-bar 22, wlnehis pivotally connected at its upper end lto the adjacent side of the main frame bythe bolt 13, but which is detachably `connected at, its lower end to the legll by thel nut and,` ibolt 23. The two frames are providedwith i companion bracebars 241, which are pivot ally secured to the lupper ends of the legs'll bythe bolts 13, and which are detachably sei ycured at their lower ends to the legs 12 by the nuts and bolts 25. The central portions '10 of the frame are also suitably spaced apart by the bearings for the ishaft 26 and by'` said shaft.

j As best seeninFigs.` 3 and 4, a pair `ot iclips 27 and 28 are provided with the detachable jointed connection, and the clip 28 basa bearing 2l) for the grindstone shaft formed integrally therewith. The clips 27 and 255` have the ears extendingy below the central portion 10 of the frame and adapted to lbe connected bya bolt SOand anut 31. The shaftis mounted in these bearings with theV customary clampingsleeves and washers 32, andren the squarediends of the shafts are secured crank arms 33, which have connecgrindstonetions: Bt pivoted thereon, and ,extending` downward from these connections 3-1 are links which are hooked into the ends of the treadle frames 36, which are of the shape 'clearly shown in Fig. 1, and which are pivoted on the rod 87 connectingT the lower ends of the legs 11. i

`With the construction thus far described, it will be understood that the operatoren the seat 18 can work the treadles 3G by his feet and rotate the grindstone 38 in the eustomary manner. By adjusting the position of the clips 27 and 28, the grindstone can be moved nearer the seat as it wears down. i

Then the frame is to be shipped, if the stone is in place, it is removed, and the bolts 28 and 25 removed, and the links 35 detached, after which the frame can be collapsed into the position shown in Fig. 2, in

Paten-ted Oct. 27, 1914i;`

Q Y 1,114,8oe

which position it can be more easily crated for shipment than would be possible if the frame were detached and had to be shipped in the set-up position shown in Fig. l.

While l have shown and describedmy invention as embodied in the form which I at present consider best adapted to carry out its purposes, it will be understood that it is capable of modilications, and that I do not desire to be limited in the interpretation of the following claims except as may be neces sitated by the state of the prior art.

`What l claim as new, and desire to secure by Letters Patent of the United States, is:

l. In a collapsible grindstone frame, the combination with a pair of side frames, each having a horizontal central portion and two legs pivoted on the ends thereof, of braces for the pairs of legs to prevent their separating laterally, detachable braces on the side frames to hold the legs rigid relative thereto, a seat secured at one end of the frame, bearings adjustably mounted on the central portions of the side frames, so that they can be moved to and from the seat, and a shaft for the stone j ournaled in said bearings.

2. In a collapsible grindstone frame, the combination with a pair of side frames, each having a horizontal central portion and two legs pivoted on the ends thereof, of braces for the pairs of legs to prevent their separating laterally, detachable braces on the side frames to hold the legs rigid relative thereto, bearings adjustably mounted on the central portions of the side frames, so that they can be moved to and from the splashboard, a shaft for the stone j ournaled in said bearings, a piece uniting said side frames, and a splash board secured to said piece.

3. ln a grindstone frame, the combination with a pair of side frames, each having a horizontal central portion and two legs pivoted on the ends thereof, of braces for the pairs of legs, to prevent their separating laterally, braces on the side frames to hold the legs rigid relative thereto, having their upper ends also pivoted concentrically with the legs and their lower ends detachably secured thereto, bearings mounted onv the central portions of the side frames, a shaft for the stone journaled in said bearings, a seatframesupported from the main-frame, and means for adjusting the distance between the seat and the bearings.

4. ln a grindstone frame, the combination with a pair of side frames, each having a horizontal central portion and two legs on the ends thereof, of braces for the pairs of legs to prevent their separating laterally, braces on the side frames to hold the legs rigid relative thereto, bearings adjustably mountedon the central portions of the side frames, a shaft for the stone journaled in said bearings, a U-shaped piece pivoted to the angles formed by the central portions and one pair of legs, a splash board secured on the closed end thereof, and a U-shaped seat-frame secured near the seat end thereof to the irst mentioned U-shaped frame and at the lower end thereof connected to the adjacent braces.

5. In a collapsible grindstone frame, the combination with a pair of side frames,each made up of a tubular horizontal central portion and tubular legs lpivoted thereto, braces for the pairs of legs to prevent their separating laterally, braces pivoted at their upper ends on the centering portion of the side frames, and having their lower ends detachably secured `to the legs to hold them rigid relative to the frames, bearings adjustably mounted on the central portions of the side frames, and a shaft for the stone journaled in said bearings.

ln witness whereof, I have hereunto setmy hand and affixed my seal this 27th day of September, A. D. 1913.

GEORGE HAROLD RICHARDS.

iL- Si Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, h. C. 

